<template>
  <div class="add-role">
    <header class="add-header">
      <div class="left">
        <span class="arrow" @click="$router.back()"><i class="el-icon-arrow-left" />返回</span>
        <span>|</span>
        <span>{{id?'编辑角色':'添加角色'}}</span>
      </div>
      <div class="right">
        黑马程序员
      </div>
    </header>
    <main class="add-main">
      <div class="step-container">
        <el-steps direction="vertical" :active="activeStep">
          <el-step title="角色信息" />
          <el-step title="权限信息" />
          <el-step title="检查并完成" />
        </el-steps>
      </div>
      <div class="form-container" v-show="activeStep === 1">
        <div class="title">角色信息</div>
        <div class="form">
        <el-form ref="roleForm" class="form-box" :model="roleForm" :rules="roleRules">
            <el-form-item label="角色名称" prop="roleName">
                <el-input v-model="roleForm.roleName" />
            </el-form-item>
            <el-form-item label="角色描述" prop="remark">
            <el-input v-model="roleForm.remark" />
            </el-form-item>
            </el-form>
        </div>
      </div>
      <div class="form-container" v-show="activeStep === 2">
        <div class="title">权限配置</div>
      <div class="tree-wrapper">
    <div v-for="item in treeList" :key="item.id" class="tree-item">
      <div class="tree-title">{{ item.title }}</div>
      <el-tree
        ref="tree"
        :data="item.children"
        show-checkbox
        default-expand-all
        node-key="id"
        highlight-current
        :props="{ label: 'title' }"
        check-strictly
      />
    </div>
  </div>
      </div>
    <div v-show="activeStep === 3" class="form-container">
  <div class="title">检查并完成</div>
  <div class="form">
    <div class="info">
      <div class="form-item">角色名称：{{ roleForm.roleName }}</div>
      <div class="form-item">角色描述：{{ roleForm.remark }}</div>
      <div class="form-item">角色权限：</div>
      <div class="tree-wrapper">
        <div v-for="item in treeList" :key="item.id" class="tree-item">
          <div class="tree-title">{{ item.title }}</div>
          <el-tree
            ref="diabledTree"
            :data="item.children"
            show-checkbox
            default-expand-all
            node-key="id"
            :highlight-current="false"
            :props="{ label: 'title',disabled: ()=>true}"
          />
        </div>
      </div>
    </div>
  </div>
</div>
    </main>
    <footer class="add-footer">
      <div class="btn-container">
        <el-button @click="prev" v-show="activeStep!==1">上一步</el-button>
        <el-button type="primary" @click="next" v-show="activeStep < 3">下一步</el-button>
        <el-button v-show="activeStep === 3" type="primary" @click="confirmAdd">确认添加</el-button>
      </div>
    </footer>
  </div>
</template>

<script>
/* eslint-disable */
import {getTreeListAPI,createRoleUserAPI,getRoleDetailAPI,updateRoleAPI} from '@/api/system'
export default {
    name: 'AddRole',
  data() {
    return {
      activeStep: 1,
      roleForm: {
          roleName: '',
          remark: '',
          perms: []
      },
      roleRules: {
          roleName: [
        { required: true, message: '请输入角色名称', trigger: 'blur' }
      ],
        remark: [
        { required: true, message: '请输入角色描述', trigger: 'blur' }
      ]
      },
      treeList: []
    }
  },
  computed:{
    id(){
      return this.$route.query.id
    }
  },
  created() {
    this.getTreeList()
    if(this.id){
      this.getRoleDetail()
    }
  },
  methods: {
    //回显数据
    async getRoleDetail(){ 
     const res = await getRoleDetailAPI(this.id)
     this.roleForm = res.data
     //回显第二步的勾选信息
     this.$refs.tree.forEach((item,index)=> {
       item.setCheckedKeys(this.roleForm.perms[index])
     })
    },
    //点击确认添加
   async confirmAdd(){
    if(this.id){
      delete this.roleForm.userTotal
      await updateRoleAPI(this.roleForm)
      this.$message.success('编辑成功')
    }else{
      await createRoleUserAPI(this.roleForm)
      this.$message.success('添加成功')
    }
       
       this.$router.back()
    },
    //获取所有的权限列表
   async getTreeList(){
       const res = await getTreeListAPI()
       this.treeList = res.data
    },
    prev() {
        if (this.activeStep === 1) {
          return
        }
      this.activeStep--
    },
    next() {
        if (this.activeStep === 3) {
          return
        }
        //第一步的统一校验
        if (this.activeStep === 1) {
            this.$refs.roleForm.validate(flag => {
                if (!flag) return
                this.activeStep++
            })
        }else if(this.activeStep === 2){
            //用户是否勾选了权限信息
           const treeComponetList = this.$refs.tree
           this.roleForm.perms = []
           //每次点击下一步前清空perms原有的数据
           treeComponetList.forEach(tree => {
             this.roleForm.perms.push(tree.getCheckedKeys())
           })
           //把二维数组展开成一维数组
           if(this.roleForm.perms.flat().length <=0){
               this.$message.error('请勾选权限信息')
               return
           }
         const disabledTreeList =  this.$refs.diabledTree
         disabledTreeList.forEach((tree,index)=> {
            tree.setCheckedKeys(this.roleForm.perms[index])
         })
           this.activeStep++
    }
  }

},
}
</script>
<style scoped lang="scss">
.add-role {
  background-color: #f4f6f8;
  height: 100vh;

  .add-header {
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    height: 64px;
    line-height: 64px;
    font-size: 16px;
    font-weight: bold;
    background-color: #fff;

    .left {
      span {
        margin-right: 4px;
      }

      .arrow {
        cursor: pointer;
      }
    }

    .right {
      text-align: right;
    }
  }

  .add-main {
    position: fixed;
    top: 64px;
    bottom: 88px;
    width: 100%;
    overflow-y: auto;
    background: #f4f6f8;
    padding: 20px 230px;
    display: flex;
    .step-container {
      height: 400px;
      width: 200px;
    }
    .form-container {
      flex:1;
      background-color: #fff;
      overflow-y: auto;
      .title {
        height: 60px;
        line-height: 60px;
        padding-left: 20px;
      }
      .form {
        margin-bottom: 20px;
        padding: 20px 65px 24px;
        .el-form {
          display: flex;
          flex-wrap: wrap;
        }
        .info{
          font-size:14px;
          color:#666;
          .form-item{
            margin-bottom:20px;
          }
        }
      }
      .form-box{
        width: 600px;
        display: flex;
        flex-direction: column;
      }
    }
  }

  .add-footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    padding: 24px 50px;
    color: #000000d9;
    font-size: 14px;
    background: #fff;
    text-align: center;
    z-index: 10001;
  }
  .tree-wrapper {
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      .tree-item {
        flex: 1;
        padding: 0px 4px;
        text-align: center;
        .tree-title {
          background: #f5f7fa;
          text-align: center;
          padding: 10px 0;
          margin-bottom: 12px;
        }
      }
    }
}
</style>